Also question is, why did Wonder Woman kill Aquaman?
Flashpoint. In the alternate timeline of the 2011 "Flashpoint" storyline, Mera is the Queen of Atlantis and killed by the Amazons at some point. Her death prompted Aquaman to cause Western Europe to sink into the sea, hoping to destroy New Themyscira as well. Mera's death was ordered by Wonder Woman.
Similarly, who did wonder woman marry? During the 1985-1986 Crisis On Infinite Earths, DC's first big continuity reboot, the married Diana and Steve of Earth-2 move to Mount Olympus.
Just so, what can kill Wonder Woman?
Yes, Wonder Woman wasn't a god and she killed Ares. Anyway, powerful enough beings can kill Wonder Woman or any god for that matter. not any god,she has killed gods,any character above her power level can kill her,that is the case for superman too and most characters that are very powerful but not inmortals.
How did wonder woman die?
Wonder Woman Is Dying, And It's Superman's Fault. DC reminds comic fans that Wonder Woman can still be taken down by one lucky shot, with the Amazon fighting for her life against her true nemesis: blood loss. The life-threatening injury is the result of a freak accident in DC's main Justice League comic series.